PANAMA CITY, Florida (AP) — Georgia Gov. Nathan Deal has ordered 1,500 National Guard troops on standby, ready for deployment as needed as Hurricane Michael blows in. Hurricanes weaken after landfall, but Michael is a catastrophic Category 4 storm and is expected to remain a hurricane as it ploughs over Georgia.

Transportation officials are already anticipating gale-force winds by closing the main bridge over the Savannah River between Savannah and South Carolina. The Georgia Department of Transportation said the Talmadge Memorial Bridge on U.S. 17 will close at 9 p.m. Wednesday, because it will be too difficult for motorists to control their vehicles in such conditions.

South Alabama is another inland area that won't be spared. Alabama's Geneva County has announced a curfew beginning at 8 p.m. Wednesday, and the local emergency management agency has urged people to voluntarily evacuate from mobile homes and other places that could be unstable in the storm's high winds.